INTRODUCTION TO JOINT MULTI-TDL
NETWORK (MTN) OPERATIONS JT101
(POST TEST 2) QUESTIONS AND
ANSWERS
1) Which type of relay requires only that at least one platform be assigned relay
timeslots and has enabled the relay function? - Answer-Unconditional Relay
2) Which of the following are advantages of Indirect (Relay) connectivity? Select all that
apply. [Remediation Accessed :N] - Answer-Extends the connectivity beyond LOS
(Selected) Increases overall anti-jam strength through increased signal level at the
receiver
(Selected) Provides a robust connectivity through multiple paths
(Selected) Multiplies the time slot requirements (the relayed message needs a time slot
to be transmitted in)
(Selected)Increased Time Slot Duty Factor (TSDF)
Wrong
3) How many JTIDS/MIDS net numbers are there? - Answer-127
4) What are the two types of Link 16 capacity? Select all that apply. [Remediation
Accessed :N] - Answer-Net capacity
Terminal capacity
Wrong
5) Which JTIDS/MIDS access mode allows only one unit to transmit per timeslot and
goes unused if that specific participant has no data to transmit? - Answer-Dedicated
access
6) Which JTIDS/MIDS access mode allows multiple participants to share common
timeslots using the same net resulting in receivers hearing the closest transmitter? -
Answer-Contention access
7) Which JTIDS/MIDS access mode allows units to automatically and dynamically
assign surveillance capacity based on platform need? - Answer-Timeslot Reallocation
(TSR)
, 8) Which JTIDS/MIDS access technique requires the assignment of a net number of 1 -
126 in the OPTASK LINK but is identified as the specific access mode in the Network
Description Document (NDD) as net 127? - Answer-Stacked Nets
9) Which JTIDS/MIDS access technique is not operator selectable and allows different
groups of users to exchange information in different Network Participation Groups
(NPGs)? - Answer-Multi-nets
10) Which JTIDS/MIDS access technique gives two or more platforms the same time
slot, net, and TSEC crypto in which to transmit because they have no requirement to
exchange information? - Answer-Dedicated Timeslot Reuse
11) Which of the following is determined by the Message Security (MSEC) variable in
Link 16? - Answer-Encryption and decryption of message data
12) In which Link 16 security mode are discrete Crypto Variable Logic Labels (CVLLs)
assigned to both TSEC and MSEC? - Answer-Partition Variable Mode (PVM)
13) What numbers are used by a network designer as Crypto Variable Logic Labels
(CVLLs)? - Answer-1 - 127
14) Which are NOT methods that can be used to deconflict Link 16 networks? Select all
that apply. [Remediation Accessed :N] - Answer-Using unique TSEC crypto keys for the
main net
Using different Initialization Data Load (IDL) files
Sufficient Geographic separation
Employing a network time offset
Wrong
15) Which of the following IS NOT a factor when choosing crypto key for a network?
Select all that apply. - Answer-Employment of Dedicated Timeslot Reuse
16) Which OPTASK LINK set designates the crypto required and which CVLL is to be
loaded? - Answer-JCRYPDAT
17) Which of the following IS NOT directed in CJCSI 6232.01 Link 16 Spectrum
Deconfliction? [Remediation Accessed :N] - Answer-NOT Requires terminal restrictions
and transmission deconfliction procedures
18) All Link 16 equipped systems must have an approved __________ entry in order to
operate. - Answer-DD Form 1494
19) Under which MIDS terminal mode are all the IPF features disabled? - Answer-
Combat Protect (2)
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